doble Calisto H1 User Manual
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doble Calisto H1 User Manual

doble Calisto H1 User Manual

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Calisto™ H1
User Guide

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Summary of Contents for doble Calisto H1

  • Page 1 Calisto™ H1 User Guide...
  • Page 2 Doble Clients under contractual agreement for Doble Test equipment and services. In no event does Doble assume the liability for any technical or editorial errors of commission or omission; nor is Doble liable for direct, indirect, incidental, consequential damages, or lost profits arising out of or the inability to use this Manual.

  • Page 3: Table Of Contents

    Sensor Mechanical Electrical 3. Electrical Interface Power Supply Ground Data+ Data- RS485 Interface 4. Default settings Calisto H1 Default Settings 5. Installation Handling Precautions 6. Operation Startup 7. Modbus Exception Response Modbus Command Register Definitions Unit Status Error Status User-Defined Oil Type Configuration Window...
  • Page 4 Calisto™ H1 User Guide User-Defined Oil Type Name Ostwald Slope, Slope (m) Ostwald Offset, Offset (b) Oil Type Operations 8. Firmware Upgrade  A. LEGAL NOTICE Warranty Equipment Limited Warranty Software Limited Warranty Limitations of Remedies B. Modbus Address Programming TP-CH1-Rev B 03/2022...

  • Page 5: Preface

    Calisto™ H1 User Guide Preface Preface This guide is intended for anyone who works with Calisto H1 online hydrogen monitoring sensor. It is assumed that the reader is familiar with professional standards and safety practices. This document uses two special typefaces to indicate particular kinds of information: •...
  • Page 6 Calisto™ H1 User Guide Preface Support For customer service, contact Doble. Global Telephone: 617-926-4900 Email: support@doble.com Web: www.doble.com Doble Engineering Company 123 Felton Street Marlborough, MA 01752 USA TP-CH1-Rev B 03/2022...

  • Page 7: Introduction

    Calisto™ H1 User Guide 1. Introduction 1. Introduction The Calisto™ H1 is designed to detect and measure hydrogen as a component of transformer oil. The hydrogen-specific solid-state sensing element is designed for ease of use and interface flexibility. The Calisto™ H1 is an online hydrogen monitoring sensor for distribution class transformers.

  • Page 8: Features

    Calisto™ H1 User Guide 2. Features 2. Features Sensor The Calisto™ H1's hydrogen measurement is based on a solid state palladium alloy sensor. • Calibrated to measure hydrogen dissolved in transformer oil • Periodic reference cycles are automatically run to eliminate offsets affecting long term stability •...

  • Page 9: Electrical Interface

    Connect the RS485 Data- signal to pin 4. RS485 Interface The RS485 input is isolated inside the Calisto H1 to improve noise immunity in harsh electrical environments. The Calisto H1 does not have line biasing built into the device. TP-CH1-Rev B...
  • Page 10 When networking the device to a supervisory device, please ensure that line biasing is provided by another device on the same network bus. A 120-ohm termination resistor, between Data+ and Data- is installed in the Calisto H1. TP-CH1-Rev B 03/2022...

  • Page 11: Default Settings

    Calisto™ H1 User Guide 4. Default settings 4. Default settings Calisto H1 Default Settings Please note the following default settings for the Calisto™ H1 when setting up a device: • Baud Rate: 19200 • Word Length: 8 • Parity: None •...

  • Page 12: Installation

    Calisto™ H1 User Guide 5. Installation 5. Installation Attach the sensor to ¾”-14 NPT fitting on the oil tank. Adapter bushing for larger ID fittings can be used; however, do not use adapters to smaller ID fittings or pipes. The sensor should be mounted in a horizontal position to prevent an air bubble from forming around the sensor element.

  • Page 13: Operation

    If the error condition persists, contact Doble customer service for assistance. During normal operation, the sensor will periodically measure oil temperature (approximately once/hour) to provide temperature-compensated dissolved gas readings.

  • Page 14: Modbus

    Calisto™ H1 User Guide 7. Modbus 7. Modbus Table 1 Modbus Read Request Packet Byte Modbus Parameter Range Meaning Slave address 1-247 Unit ID Address Function Code Read Holding Register Starting Address Hi 0x00-0xFF Holding Register Hi Byte Starting Address Lo 0x00-0xFF Holding Register Lo Byte Number of registers Hi...
  • Page 15 Calisto™ H1 User Guide 7. Modbus 2N+4 CRC Lo 0x00-0xFF CRC Low Byte 2N+5 CRC Hi 0x00-0xFF CRC High Byte Note: N is the number of bytes returned, based on the number of registers requested. If N registers are requested, then 2N+5 bytes are returned.

  • Page 16: Exception Response

    Calisto™ H1 User Guide 7. Modbus Table 4 Modbus Write Response Packet Byte Modbus Parameter Range Meaning Slave Address 1-247 Unit ID Address Function Code Register Address Hi Byte 0x00-0xFF Unit Register Address Hi Byte Register Address Lo Byte 0x00-0xFF Unit Register Address Low Byte Data Value Hi Byte 0x00-0xFF Data Value Lo Byte...
  • Page 17 Calisto™ H1 User Guide 7. Modbus differentiating field is the exception code – byte 3. In addition, the total exception response length is 5 bytes rather than the normal message length. Table 5 Exception Response Packet Range Byte Modbus Parameter Meaning 1-247 Slave Address...
  • Page 18 Calisto™ H1 User Guide 7. Modbus A value contained in the query data field is not an allowable value for slave. This indicates a fault in the structure of the remainder of a complex request, such as that the implied length Illegal Data is incorrect.

  • Page 19: Modbus Command Register Definitions

    Calisto™ H1 User Guide 7. Modbus Modbus Command Register Definitions The Command Register definitions for the Gen5 Hydrogen Sensor are identified in Table 7. Table 7 Command Register Locations Register Parameter Function Data Type Data Range Access Measurements Hydrogen, ppm 32-bit bin- 0 to High word...
  • Page 20 Calisto™ H1 User Guide 7. Modbus +20,000,000 off- Rate of Change, ppm H2 per 32-bit -20,000,000 Week Low word binary number +20,000,000 +20,000,000 off- Rate of Change, ppm H2 per 32-bit -20,000,000 Month High word binary number +20,000,000 +20,000,000 off- Rate of Change, ppm H2 per 32-bit...
  • Page 21 Calisto™ H1 User Guide 7. Modbus 32-bit Manufacturing Year binary Date value High byte: 32-bit Factory Month binary Calibration Date value Low byte: Day 32-bit Factory Year binary Calibration Date value 85-86 Reserved for future use High byte: Dissolved Gas Month Calibration Date Low byte: Day Dissolved Gas...
  • Page 22 Calisto™ H1 User Guide 7. Modbus Write reg 126- DB Command None Section 129 first 123-124 Reserved for future use Clear DC Command DGA calibratio None 32-bit 0 to Calibration Gas, High word binary ppm H2 1,000,000 number 32-bit Calibration Gas, Low word binary ppm H2 number...
  • Page 23 Calisto™ H1 User Guide 7. Modbus Refer to user- 16-bit defined oil type Ostwald Slope, b binary configuration number section. Refer to user- 16-bit defined oil type Ostwald Slope, b binary configuration number section. 1 = open edit Refer to user- 16-bit Oil type defined oil type...
  • Page 24 Calisto™ H1 User Guide 7. Modbus power cycled for baud rate change to take place. 161-174 Reserved for future use Diagnostics Date & Time; read register 175 first; order high-byte Month/Year Two bytes / low-byte; add 2000 to year (64-bit) Date &...
  • Page 25 Calisto™ H1 User Guide 7. Modbus read register 175 first; order high-byte / low-byte; ary number add 2000 to year (64-bit) 179-200 Reserved for future use User Information Must start reading from low address 201-210 Owner ID ASCII String Must write high and low addresses to save string...

  • Page 26: Unit Status

    Calisto™ H1 User Guide 7. Modbus automatically read from the temporary location by the firmware. Likewise, with a write, the high value is stored until the second value is received at which time both values are written to the instrument. Unit Status Unit status information is maintained in Modbus register 111.

  • Page 27: Error Status

    Calisto™ H1 User Guide 7. Modbus Error Status When the error flag (bit 12) of the Unit Status register 111 is set, this 32-bit register has more information about what is causing the error. The bit map is shown below, unlisted bits are reserved.

  • Page 28: User-Defined Oil Type Name

    Calisto™ H1 User Guide 7. Modbus 2. Write registers 136-143 with the name of the oil 3. Write registers 144,145 with the Ostwald slope 4. Write registers 146,147 with the Ostwald offset 5. Write register 148 with 0x0002 to save the values and close User-Defined Oil Type Name The name of the user defined oil type is accessed in registers 136-143.

  • Page 29: Firmware Upgrade

    Calisto™ H1 User Guide 8. Firmware Upgrade 8. Firmware Upgrade Calisto™ H1 firmware is field upgradable. Instructions and PC software will be provided by Doble as needed. TP-CH1-Rev B 03/2022...

  • Page 30: Legal Notice

    During the one year warranty period, DOBLE will repair or replace, at its option, any defective products or components thereof at no additional charge, provided that the product or component is returned, shipping prepaid, to DOBLE.

  • Page 31: Limitations Of Remedies

    The replacement of any disks not meeting DOBLE’s “limited warranty” which are returned to DOBLE. If DOBLE is unable to deliver replacement disks which are free from defects in materials and workmanship, Purchaser may terminate this agreement. By returning the software product and all copies thereof in any form and affirming compliance with this requirement in writing, DOBLE will refund the purchase price.

  • Page 32: Modbus Address Programming

    3412/Tester.exe 1. Power the Calisto H1 using a DC power supply and connect it to your PC using a USB to RS485 dongle. • Connect the RS485 data wires from Calisto H1 to the USB to RS485 converter and make sure the polarity is correct.
  • Page 33 Calisto™ H1 User Guide B. Modbus Address Programming Figure 4 Device Manager Ports 3. Open the Modbus applicaiton - Modbus Tester. Figure 5 Modbus Tester Default Settings Update the following fields: • Port: COM4 (Might be a different COM on your PC) •...
  • Page 34 Calisto™ H1 User Guide B. Modbus Address Programming • Starting Register: 151 (Set unit ID register) • # of Registers: 1 Now enter the desired Modbus address that you want to set on the unit. Type in the desired address in the field to the right of the unit ID box. You don’t need to know the current address on the unit to set the new address, that’s the purpose of using the broadcast address.
  • Page 35 Calisto™ H1 User Guide B. Modbus Address Programming Figure 8 CRC Error This error usually occurs when using a USB dongle without line biasing 4. To confirm that the new address has been successfully programmed on the unit, try to read the oil temperature register using the new programmed address. Change the following: •...
  • Page 36 Calisto™ H1 User Guide B. Modbus Address Programming Figure 10 Raw Temperature Value Use the following equation to convert the counts to engineering units: Temperature = (Counts/100) – 100; The counts in this example is 13701, therefore the temperature is: Temperature = (13701/100) –...

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